[−][src]Enum chalk_ir::QuantifierKind
Kinds of quantifiers in the logic, such as forall
and exists
.
Variants
Universal quantifier ForAll
.
A formula with the universal quantifier forall(x). P(x)
is satisfiable
if and only if the subformula P(x)
is true for all possible values for x.
Existential quantifier Exists
.
A formula with the existential quantifier exists(x). P(x)
is satisfiable
if and only if there exists at least one value for all possible values of x
which satisfies the subformula P(x)
.
In the context of chalk, the existential quantifier usually demands the
existence of exactly one instance (i.e. type) that satisfies the formula
(i.e. type constraints). More than one instance means that the result is ambiguous.
Trait Implementations
impl Clone for QuantifierKind
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pub fn clone(&self) -> QuantifierKind
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pub fn clone_from(&mut self, source: &Self)
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impl Copy for QuantifierKind
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impl Debug for QuantifierKind
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impl Eq for QuantifierKind
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impl<I: Interner> Fold<I> for QuantifierKind
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type Result = Self
The type of value that will be produced once folding is done.
Typically this is Self
, unless Self
contains borrowed
values, in which case owned values are produced (for example,
one can fold over a &T
value where T: Fold
, in which case
you get back a T
, not a &T
). Read more
pub fn fold_with<'i>(
self,
_folder: &mut dyn Folder<'i, I>,
_outer_binder: DebruijnIndex
) -> Fallible<Self::Result> where
I: 'i,
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self,
_folder: &mut dyn Folder<'i, I>,
_outer_binder: DebruijnIndex
) -> Fallible<Self::Result> where
I: 'i,
impl Hash for QuantifierKind
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pub fn hash<__H: Hasher>(&self, state: &mut __H)
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pub fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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H: Hasher,
impl Ord for QuantifierKind
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pub fn cmp(&self, other: &QuantifierKind) -> Ordering
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#[must_use]pub fn max(self, other: Self) -> Self
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#[must_use]pub fn min(self, other: Self) -> Self
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#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self
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impl PartialEq<QuantifierKind> for QuantifierKind
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pub fn eq(&self, other: &QuantifierKind) -> bool
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#[must_use]pub fn ne(&self, other: &Rhs) -> bool
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impl PartialOrd<QuantifierKind> for QuantifierKind
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pub fn partial_cmp(&self, other: &QuantifierKind) -> Option<Ordering>
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#[must_use]pub fn lt(&self, other: &Rhs) -> bool
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#[must_use]pub fn le(&self, other: &Rhs) -> bool
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#[must_use]pub fn gt(&self, other: &Rhs) -> bool
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#[must_use]pub fn ge(&self, other: &Rhs) -> bool
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impl StructuralEq for QuantifierKind
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impl StructuralPartialEq for QuantifierKind
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impl<I: Interner> Visit<I> for QuantifierKind
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pub fn visit_with<'i, B>(
&self,
_visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
_outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
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&self,
_visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
_outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
impl<I: Interner> Zip<I> for QuantifierKind
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Auto Trait Implementations
impl RefUnwindSafe for QuantifierKind
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impl Send for QuantifierKind
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impl Sync for QuantifierKind
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impl Unpin for QuantifierKind
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impl UnwindSafe for QuantifierKind
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> Cast for T
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pub fn cast<U>(self, interner: &U::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,
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Self: CastTo<U>,
U: HasInterner,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, I> Shift<I> for T where
T: Fold<I>,
I: Interner,
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T: Fold<I>,
I: Interner,
pub fn shifted_in(Self, &I) -> <T as Fold<I>>::Result
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pub fn shifted_in_from(Self, &I, DebruijnIndex) -> <T as Fold<I>>::Result
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pub fn shifted_out_to(
Self,
&I,
DebruijnIndex
) -> Result<<T as Fold<I>>::Result, NoSolution>
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Self,
&I,
DebruijnIndex
) -> Result<<T as Fold<I>>::Result, NoSolution>
pub fn shifted_out(Self, &I) -> Result<<T as Fold<I>>::Result, NoSolution>
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T, I> VisitExt<I> for T where
T: Visit<I>,
I: Interner,
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T: Visit<I>,
I: Interner,